private string MakeSecondSign(WeixinPayReq req)
{
WxPayData data = new WxPayData();
data.SetValue("appid", req.Appid);
data.SetValue("partnerid", req.Partnerid);
data.SetValue("prepayid", req.Prepayid);
data.SetValue("package", req.Package);
data.SetValue("noncestr", req.Noncestr);
data.SetValue("timestamp", req.Timestamp);
return(data.MakeSign());
}
/**
* 调用统一下单，获得下单结果
* @return 统一下单结果
* @失败时抛异常WxPayException
*/
private string GetUnifiedOrderResult(PayInfo info)
{
string subject;
string body;
PayHelper.GetSubjectAndBody(info, out subject, out body);
//统一下单
WxPayData data = new WxPayData();
data.SetValue("body", subject);
data.SetValue("out_trade_no", info.BillId);
//金额单位分
data.SetValue("total_fee", (int)info.PayAmount * 100);
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));
data.SetValue("trade_type", "APP");
WxPayData result = WxPayApi.UnifiedOrder(data);
if (!result.IsSet("appid") || !result.IsSet("prepay_id") || result.GetValue("prepay_id").ToString() == "")
{
throw new WxPayException("UnifiedOrder response error!");
}
//客户端调起支付接口需要参数
WeixinPayReq req = new WeixinPayReq();
req.Appid = result.GetValue("appid").ToString();
req.Partnerid = result.GetValue("mch_id").ToString();
req.Prepayid = result.GetValue("prepay_id").ToString();
req.Noncestr = WxPayAPI.WxPayApi.GenerateNonceStr();
req.Timestamp = WxPayAPI.WxPayApi.GenerateTimeStamp();
req.Sign = MakeSecondSign(req);
return(JsonConvert.SerializeObject(req));
}
